Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
Alphabet (Google) Class C
GOOG
|
+$54.6M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$52.5M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$40.9M |
| 4 |
Apple
AAPL
|
+$16.5M |
| 5 |
Visa
V
|
+$12M |
Top Sells
| 1 |
Amazon
AMZN
|
+$98.7M |
| 2 |
Meta Platforms (Facebook)
META
|
+$70.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$33.4M |
| 4 |
Goldman Sachs
GS
|
+$30.2M |
| 5 |
Boeing
BA
|
+$26.5M |
Sector Composition
| 1 | Communication Services | 14.71% |
| 2 | Consumer Discretionary | 14.32% |
| 3 | Technology | 11.86% |
| 4 | Financials | 7.38% |
| 5 | Industrials | 6.44% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1076
CEMIG Preferred Shares
CIG
$5.81B
| $47K | ﹤0.01% |
25,961
-21,014
| -45% | -$38K |
|
1077
Teucrium Corn Fund
CORN
$48.8M
| $47K | ﹤0.01% |
2,995
-3,465
| -54% | -$54.4K |
|
1078
iShares Russell 1000 ETF
IWB
$44.6B
| $47K | ﹤0.01% |
+344
| New | +$47K |
|
1079
El Pollo Loco
LOCO
$303M
| $47K | ﹤0.01% |
3,135
-6,267
| -67% | -$94K |
|
1080
Talos Energy
TALO
$1.72B
| $47K | ﹤0.01% |
2,931
-23,972
| -89% | -$384K |
|
|
ATSG
1081
DELISTED
Air Transport Services Group, Inc.
ATSG
| $47K | ﹤0.01% |
2,098
+1,183
| +129% | +$26.5K |
|
|
EMCI
1082
DELISTED
EMC INS Group Inc
EMCI
| $46K | ﹤0.01% |
+1,466
| New | +$46K |
|
1083
Direxion Daily Healthcare Bull 3X Shares
CURE
$173M
| $46K | ﹤0.01% |
974
-2,672
| -73% | -$126K |
|
1084
Cemex
CX
$13.3B
| $46K | ﹤0.01% |
9,599
+6,951
| +263% | +$33.3K |
|
1085
China Automotive Systems
CAAS
$141M
| $45K | ﹤0.01% |
+18,623
| New | +$45K |
|
1086
ClearSign Technologies
CLIR
$29.7M
| $45K | ﹤0.01% |
44,600
+32,423
| +266% | +$32.7K |
|
1087
PennyMac Financial
PFSI
$6.22B
| $45K | ﹤0.01% |
2,131
-308
| -13% | -$6.5K |
|
1088
Southern Copper
SCCO
$82.9B
| $45K | ﹤0.01% |
+1,566
| New | +$45K |
|
1089
Smith Micro Software
SMSI
$15.3M
| $45K | ﹤0.01% |
3,141
+950
| +43% | +$13.6K |
|
|
STKL
1090
SunOpta
STKL
$735M
| $45K | ﹤0.01% |
+11,676
| New | +$45K |
|
1091
Cathay General Bancorp
CATY
$3.4B
| $44K | ﹤0.01% |
+1,331
| New | +$44K |
|
1092
Lazard
LAZ
$5.25B
| $44K | ﹤0.01% |
1,200
+737
| +159% | +$27K |
|
1093
Red Robin
RRGB
$111M
| $44K | ﹤0.01% |
1,648
-4,498
| -73% | -$120K |
|
1094
WisdomTree
WT
$2.02B
| $44K | ﹤0.01% |
+6,666
| New | +$44K |
|
1095
ProShares Ultra FTSE China 50 of PROSHARES TRUST
XPP
$20.4M
| $44K | ﹤0.01% |
784
-1,538
| -66% | -$86.3K |
|
1096
Axogen
AXGN
$739M
| $43K | ﹤0.01% |
2,146
-4,423
| -67% | -$88.6K |
|
1097
Barnes & Noble Education
BNED
$288M
| $43K | ﹤0.01% |
+108
| New | +$43K |
|
1098
CareDx
CDNA
$710M
| $43K | ﹤0.01% |
+1,746
| New | +$43K |
|
1099
KT
KT
$9.52B
| $43K | ﹤0.01% |
+3,083
| New | +$43K |
|
1100
World Kinect Corp
WKC
$1.41B
| $43K | ﹤0.01% |
2,018
-5,075
| -72% | -$108K |
|